<http://schema.org/mainEntityOfPage>
<https://techcrunch.com/2013/04/24/wwdc-2013-tickets-on-sale-april-25-at-10am-pt-runs-june-10-14/>
<https://techcrunch.com/2013/04/24/wwdc-2013-tickets-on-sale-april-25-at-10am-pt-runs-june-10-14/>